The best title of the story is ______
A. Flights of Friendship 7
B. Tracking Station
C. Radio Network
D. John Glenn
查看答案
It can be inferred from the story that ______
A. all tracking stations arc inside Perth, Australia
B. Friendship 7 stopped in the United States
C. radio equipment is important in space flights
D. John Glenn worked alone in the tracking station
During his flights, John H. Glenn, Jr. , could always reach a ______
A. tracking station
B. ship at sea
C. Mercury capsule
D. city of Perth
经常项目和资本项目下都实现了货币自由兑换，该国货币才能被列为可兑换货币。 ()
A. 正确
B. 错误
【B20】
A. hero
B. success
C. welcomed
D. beauty
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